{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["time", "person", "geographical phenomenon", "location", "plant", "instrument"], "input": "The first modern coin-operated vending machines were introduced in London , England in the early 1880 s , dispensing postcards ."}
{"time": [], "person": [], "geographical phenomenon": [], "location": ["London", "England"], "plant": [], "instrument": []}